From 5c63ff41a51771b14f643dd78623392e5bba8f6c Mon Sep 17 00:00:00 2001
From: Peter Gerwinski <peter.gerwinski@hs-bochum.de>
Date: Mon, 5 Jun 2023 16:31:05 +0200
Subject: [PATCH] =?UTF-8?q?Weitere=20Beispiele:=20C-Array=20zur=C3=BCckgeb?=
=?UTF-8?q?en,=205.6.2023?=
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---
20230605/array-param-06.c | 30 ++++++++++++++++++++++++++++++
20230605/array-param-07.c | 37 +++++++++++++++++++++++++++++++++++++
20230605/array-param-08.c | 37 +++++++++++++++++++++++++++++++++++++
3 files changed, 104 insertions(+)
create mode 100644 20230605/array-param-06.c
create mode 100644 20230605/array-param-07.c
create mode 100644 20230605/array-param-08.c
diff --git a/20230605/array-param-06.c b/20230605/array-param-06.c
new file mode 100644
index 0000000..f3f08ff
--- /dev/null
+++ b/20230605/array-param-06.c
@@ -0,0 +1,30 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+int read_something (int **a)
+{
+ int n;
+ printf ("Wie viele Zahlen? ");
+ scanf ("%d", &n);
+ int *b = malloc (n * sizeof (int));
+ for (int i = 0; i < n; i++)
+ {
+ printf ("%d. Zahl: ", i + 1);
+ scanf ("%d", b + i); /* andere Schreibweise: &a[i] */
+ }
+ if (a)
+ *a = b;
+ return n;
+}
+
+int main (void)
+{
+ int *x = NULL;
+ int numbers_read = read_something (&x);
+ printf ("%d eingegebene Zahlen:", numbers_read);
+ for (int i = 0; i < numbers_read; i++)
+ printf (" %d", x[i]);
+ printf ("\n");
+ free (x);
+ return 0;
+}
diff --git a/20230605/array-param-07.c b/20230605/array-param-07.c
new file mode 100644
index 0000000..0783eac
--- /dev/null
+++ b/20230605/array-param-07.c
@@ -0,0 +1,37 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+int read_something (int **a)
+{
+ int i = 0;
+ printf ("Zum Beenden: -1 eingeben\n");
+ int n = 1;
+ int *b = malloc (n * sizeof (int));
+ do
+ {
+ if (i + 1 >= n)
+ {
+ n *= 2;
+ b = realloc (b, n * sizeof (int));
+ }
+ printf ("%d. Zahl: ", i + 1);
+ scanf ("%d", b + i); /* andere Schreibweise: &a[i] */
+ i++;
+ }
+ while (b[i - 1] >= 0);
+ if (a)
+ *a = b;
+ return n;
+}
+
+int main (void)
+{
+ int *x = NULL;
+ int numbers_read = read_something (&x);
+ printf ("%d eingegebene Zahlen:", numbers_read);
+ for (int i = 0; i < numbers_read; i++)
+ printf (" %d", x[i]);
+ printf ("\n");
+ free (x);
+ return 0;
+}
diff --git a/20230605/array-param-08.c b/20230605/array-param-08.c
new file mode 100644
index 0000000..551620e
--- /dev/null
+++ b/20230605/array-param-08.c
@@ -0,0 +1,37 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+int read_something (int **a)
+{
+ int i = 0;
+ printf ("Zum Beenden: -1 eingeben\n");
+ int n = 1;
+ int *b = malloc (n * sizeof (int));
+ do
+ {
+ if (i + 1 >= n)
+ {
+ n *= 2;
+ b = realloc (b, n * sizeof (int));
+ }
+ printf ("%d. Zahl: ", i + 1);
+ scanf ("%d", b + i); /* andere Schreibweise: &a[i] */
+ i++;
+ }
+ while (b[i - 1] >= 0);
+ if (a)
+ *a = b;
+ return i - 1;
+}
+
+int main (void)
+{
+ int *x = NULL;
+ int numbers_read = read_something (&x);
+ printf ("%d eingegebene Zahlen:", numbers_read);
+ for (int i = 0; i < numbers_read; i++)
+ printf (" %d", x[i]);
+ printf ("\n");
+ free (x);
+ return 0;
+}
--
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